Paint-remover composition.



UNITE STATES PAT-Eur OFFICE.

WALTER ALEXANDER, on NEW 'YORK, u. Y.

PAINT-REMOVEB COMPOSITION.

No Drawing.

1 '0 all "IF/30in a-iay concern:

le it known that I, W'AIm-x: ALEXANDl-IR, a citizen ol the United Statesof America, and a res dent of the city of New York, hm-ougzh oflvlanlnittan. State of New York, have in ented a certain new and usefulPaint-Remover Composition, of which the following is a specification.

I ha e discovered that solutions of cellulose esters in organic solventscan be modified by the addition of very small i' uantities of certa nsubstances in so far that they constitute a (.(Hlll'lOFjlliGEl remainingin fluid con- (lition many hours longer than Without such additions. ll,for example, a solution of y esters in acetone, such as pyrotiylin\fil'IllSllL. be .ad on a surface, the organic so of the solutionevaporates very quickly and permits the cellulose ester to dry to a hardslzi'n. llut it this same varnish be treated with a fractionalpercentage of certain solid llYdlTJllT lU'llS, or of \vaxy bodies, forexample, either parallin or beeswax or stearic acid, or the like, dissoved in an organic solvent, then the solvents, even the most volatile,such. as acctone. do not evaporate quickly, but the composition remainsfluid for many hours, and even after about twenty to tuenty-tcur hoursthe solvents are still retained to such an extent that the hard dryingof the composition is prevented.

My composition possesses the property that it will form an emulsion withwater, or with a solution of a carbohydrate, such as glucose, and thelike, in Water. Such compositions lind various applicationsin thearts.

They may be employed as most etl'icient' paint, varnish and lacremovers, for the reason that the skin or coating covering thecomposition is substantially impenetrable to the volatile solvents a n dretains them in contact with the surfaces to 'be treated for so long aperiod that thereinoval' of thepaint accon'lplished most thoroughly. Thepre relation of the rapi d e'.'-.iporalion also enables the operator towork slowly in the applicationof thercznorer and the cleaning of thetreated so; ace. Edll'illGl'IllOl'ti, my composiaqueous form describedhas the ucity as a. paintremover of equal double on ellicicncy either toattach oil or water paints or both. where (,.IIQ"SU)CI'POSES the other.

Specification of Letters Patent.

may be applied as a bleaching agc'ntx for hard wood floors, and similarsurfaces In practising my invention, 1 1p; efer to proceed as follows: Twe parts-of glucose are dissolved in two parts otwater; to this solutionfifty-seven parts of a pyrox n varnish areadded; then ten parts o eetoneand seienteen g'mrts of coal-tar heir/oi; then ten parts of water arestirred into the liquid and finally one-tenth part of paraiiiu dis-gsolved in five parts of benzol are added.

In the above formulathe glucose 'aolution may be substituted. by plainvvatcr to which a nitrocellulose solution orfacetylcellulnsc:--:olutionis d roctlyadded,

Although I have above descril'lcd an example by which the-object o' t myinvention may be accomplished. I do not wish to be understood asexcluding; from my claims equivalents for the ingredients or for theoperations employed in the process, as

equivalent substitutes may be employed and steps taken without dopartimrfrom the scope or purpose of the proce s intended to be secured hereby.

I claim: Y

1. A fluld'composition of matter compris ing a solution of a celluloseester in a volatile organic solvent, said solution having film-formingproperties and consistency. a :small amount of a Waxy body in solutionand an aqueous liquid, said composition possesslng the property offorming a cellulose ester film upon, exposure to the air, but remaining'fluid beneath said film for many hours, and being a paint remover forboth water and oil paints.

52. A fluid composition of matter comprising a solution of anitrocellulose in a volatile organic solvent. said solution havingfilnrtorming properties and consistency, a small. amount of waxy body insolution and an aqueous liquid, said composition possessing the propertyof forming a nitrocellulose film upon exposure to the air, but tolatented June 22. 1 91 5;

Application filed February '23, 1910. Serial No. 545,284. i

- drate and maining fluid beneath saidfilm for many hours, and being apaint remover for both water and oil paints.

3. A fluid composition'of matter comprising a solution of a celluloseester in a volatile organic solvent, said solution being of film-formingconsistency and properties, a

fraction of a per cent. of a waxy ,bodyin'm lution, and an aqueousliquid, said composition possessing the property of forming a celluloseester film upon exposure to the air, but remaining fluid beneath saidfilm for many hours, and being a paint remover for both water and oilpaints 4. A fluid eomposition of matter comprising the followingingredients in about the following proportions,2 parts glucose dis-'solved in 2 parts water, 57,parts ofpyroxy- 'lin varnish, 10 parts ofacetone, 17 parts of coal tar benzene, 10parts of water andl/IO partofparaiiin dissolved in benzol.

5. As a new composition of matter a cellulose-ester solution which iskept in a fluid condltion, when exposedto evaporation under theconditions as herein described, comprising cellulose esters dissolved inorganic solvents, an aqueous solution of'a carbohybody, substantially asdedrate and a waxy scribed.

6. As a new composition of matter a eelder the conditions as hereindescribcdncom prising pyroxylin dissolved in organic solvents, anaqueous solution of a carbohydrate and ft'WZlX) body, substautiallv asdescribed.

8. As a new composition ofniatter a collulose-cster solution 'n'hichiskept in a fluid condition, when exposed to evaporation under theconditionsas herein described, comprising pyroxylin dissolved in organicsol- 'prising cellulose esters dissolved in organic condition,.whenexposed to evaporation I'mv v55 der the conditions as herein described,comprising cellulose esters dissolved in,organic; y-

solvents,an aqueous solution of glucose and so f a waxy body,substantially as described,-

10. As a new composition of matter a eel; lulose-ester solution which iskept in a fluid v condition, when exposed to evaporation unq der theconditions as herein describedgcom solvents, an aqueous solution ofglucose parafiin, substantially as described. v 1 1. Asavnewicomposition ofmatt'e'r" steel? 1 lulose-ester solution whichis-"kept in a lllllllf condition, when exposed to evaporation u'n-1 derthe conditions 'as herein described; eoin 7 prising pyroxylin dissolvcdin organic'flsol rents, an aqueous sol ution of glucose and'a waxy body,substantiallyas'describedl i v 12. As new compositionaof matterafcel- Alulose-ester solution which iskeptin a flu'id 7. condition, when exposedto euaporatiou u der the conditions as-lie-rein describedficoma ii eprising pyroicylin dissolved.- inorganic-sol vents. an aqueoussolutionxof glucose and! paraiiin, substantially as described. $0 13.; Acomposition of matter compri-sing'a solution of nitrocellulose inanforlanic solvent emulsified with a liquid coi'np'risingwa tor, andcontaining-less than, one per cent. V 1 of awaxy body. 1 585 14. Acomposition of matter comprising; 1 a solution of nitrocelluloseinacetone emul sificd with a liquid"comprising watcig'an'd containingless than one per cent. of aiwaxy body.

In testimony. whereof I have hereunto set v mvhaud in the presence oitwo subscribing witnesses.

WALTER ALEXANDER.

Witnesses:

ELIZABETH J VAIL, Snwann DAVIS.

